#ghcr — Public Fediverse posts

Pro-Grade Ham Radio Displays: Integrating OpenHamClock into PiSignage

758 words, 4 minutes read time.

A Helping Hand Needed for a Fellow Programmer

I’m reaching out to see if you can lend a hand to a talented software developer who’s currently on the job hunt. With over 30 years of experience in C#, .NET (Core/6–8), REST APIs, SQL Server, Angular/Razor, Kubernetes, and cloud CI/CD, he’s a seasoned pro with a proven track record of leading modernization projects and delivering production systems.

Some of his notable accomplishments include DB2 to SQL migrations, building real-time SignalR apps, and developing full-stack API and frontend projects. Based in Southeast Michigan, he’s looking for senior engineering, architecture, or technical lead roles that will challenge him and utilize his skills.

If you’re in a position to help, you can check out his resume and portfolio at http://charles.friasteam.com.

Let’s all look out for each other – if you know of any opportunities that might be a good fit, could you please consider passing this along to your network?

—

If you are a ham radio operator, you know that a HamClock is the ultimate shack companion. But what if you want to move beyond a dedicated small screen and integrate that data-rich display into a professional digital signage environment?

By using PiSignage, you can rotate your HamClock with other station metrics, weather, or club announcements. However, getting a clean, secure, and “pop-up free” experience requires a few tricks.

In this post, I’ll show you how to deploy OpenHamClock using Docker and how to strip away the UI clutter for a seamless kiosk experience.

The Setup

To follow along, you will need a PiSignage server instance. I personally run mine as a Docker container, which keeps the server stack isolated and easy to back up.

1. The Docker Compose Configuration

PiSignage and modern browsers often require secure contexts (HTTPS) for certain features. Since the standard HamClock output is HTTP, we’ll use a two-service setup: the clock itself and a lightweight SSL-wrap sidecar using socat and openssl.

docker-componse.yml

 services:    openhamclock:      image: ghcr.io/accius/openhamclock:latest      container_name: openhamclock      expose:        - "3000"      environment:        - CALLSIGN=<CALL SIGN>        - LOCATOR=<Grid Square Locator>        - THEME=dark        - UNITS=imperial      restart: unless-stopped     ssl-wrap:      image: alpine      container_name: hamclock-ssl      ports:        - "3000:3000"      command: >        sh -c "apk add --no-cache socat openssl &&                openssl req -x509 -newkey rsa:2048 -keyout /tmp/key.pem -out /tmp/cert.pem -days 365 -nodes -subj '/CN=localhost' &&               cat /tmp/cert.pem /tmp/key.pem > /tmp/combined.pem &&               socat OPENSSL-LISTEN:3000,cert=/tmp/combined.pem,verify=0,fork,reuseaddr TCP:openhamclock:3000"      restart: unless-stopped 

2. Silencing the “What’s New” Pop-ups

When using HamClock as a signage element, you want it to be “set and forget.” The “What’s New” slide-ins are helpful for desktop users but ruin a clean kiosk display.

While there is a formal change request pending for a toggle, you can currently “force” these elements to stay hidden by injecting a bit of CSS directly into the distribution files. Run this command within your app environment:

find /app/dist -name "*.css" -exec sh -c 'echo "div[style*=\"whatsNewSlideIn\"], div[style*=\"backdrop-filter\"] { display: none !important; }" >> {}' \;

3. Setting Up the Slide in PiSignage

Once your containers are humming along, you need to tell PiSignage how to display the clock.

Create the Weblink Asset

1. Log in to your PiSignage Admin Panel.
2. Navigate to Assets > Add > Weblink.
3. Fill in the details:
   • Name: OpenHamClock
   • Link Address: https://<YOUR-HOSTNAME>:3000/?kiosk=true
4. Click Save.

Pro Tip: The ?kiosk=true suffix is critical. It tells HamClock to hide its own internal menus and headers, giving you a dedicated, high-contrast dashboard perfect for a wall-mounted display.

Deploy to Your Player

1. Go to Playlists and add your new “OpenHamClock” asset.
2. Set the Duration: Set this to 0 for a permanent display, or a high number (like 300 for 5 minutes) if it’s part of a rotation.
3. Go to Groups, select your player, and deploy the playlist.

Your screen should refresh and show a beautiful, clean HamClock interface within seconds!

Running PiSignage in Docker?

For those of you looking to keep your entire server stack contained, running the PiSignage central server in Docker is the way to go. It keeps your host OS clean and makes management a breeze.

If you’d like me to discuss how to set up a dockerized PiSignage server, please comment below!

— 73 —

Call to Action

Getting this stack to play nice wasn’t a “one-and-done” install. It was a hard-fought process that took multiple attempts to finally crack the code on bypassing those “What’s New” screens and forcing a clean kiosk display. But the victory is in the uptime.

Don’t just lurk. If you’ve got the guts to show how you’re rebuilding your station on the wreckage of the old ways, drop a comment below. How are you occupying the victory today?

D. Bryan King

Sources

• OpenHamClock GitHub Repository (accius)
• Original HamClock Source by Clear Sky Institute
• PiSignage Official Documentation
• Docker Compose Specification and Documentation
• Alpine Linux Official Docker Image
• Socat Man Page – Multipurpose Relay Tool
• OpenSSL Official Documentation
• Maidenhead Locator System Overview
• Deep Dive: HamClock on Raspberry Pi
• PiSignage Server Docker Implementation
• Raspberry Pi Kiosk Mode Configuration
• MDN Web Docs: CSS Display Property
• Docker CMD vs Entrypoint Explained
• Understanding Self-Signed SSL Certificates
• ARRL: Understanding Grid Squares
• CSS Attribute Selectors (For Style Injection)
• Docker Container Networking Guide
• Linux Find Command Documentation
• Portainer: Managing Dockerized Signage Stacks
• PiSignage Community Support Forum

Disclaimer:

I love sharing what I’m learning, but please keep in mind that everything I write here—including this post—is just my personal take. These are my own opinions based on my research and my understanding of things at the time I’m writing them. Since life moves way too fast and things change quickly, please use your own best judgment and consult the experts for your specific situations!

Related Posts

Rate this:

Finally got time to update the source of my bentopdf instance, to avoid pulling from the "discontinued" docker hub version

Remember to switch to ghcr.io/alam00000/bentopdf-simple:1.15.3 to avoid being compromised by the other version

More context: https://github.com/alam00000/bentopdf/issues/399

#selfhosted #selfhosting #pdf #homelab #security #docker #dockerhub #ghcr #

https://blog.gslin.org/archives/2025/09/07/12612/ghrc-io-%e7%9a%84%e6%83%a1%e6%84%8f%e8%a1%8c%e7%82%ba-%e4%b8%8d%e6%98%af-github-%e6%9c%ac%e5%ae%b6%e7%9a%84-ghcr-io/

ghrc.io 的惡意行為 (不是 GitHub 本家的 ghcr.io)

#container #ghcr #ghrc #github #io #malicious #repository #security #token

Looks like there is a typo squatting attack going on to harvest #container #registry login #credentials of #ghcr:

https://bmitch.net/blog/2025-08-22-ghrc-appears-malicious/

Be safe out there!

#github #docker #podman #kubernetes #phishing #devops

Harbor: Docker Registry на своём сервере

В одной из предыдущих статей, а именно в «Применение Portainer в CI/CD процессах» , мы разобрались, что такое сборка Docker-образов и какие существуют варианты их хранения. В том примере использовался GitHub Docker Registry, а в своей работе я применяю хранилище в собственном Git-хостинге на базе Gitea. Альтернативой хранению образов рядом с кодом является самостоятельный (self-hosted) репозиторий образов, например Harbor. В этой статье мы разберём, что такое Harbor, как установить его на свой сервер и как начать им пользоваться. Если вам нравятся подобные материалы, подписывайтесь на наш Telegram-канал «Код на салфетке» !

https://habr.com/ru/articles/937168/

#cicd #harbor #ghcr #docker_registry #Github_Container_registry #Сборка_Docker_образа #Docker_образ #selfhosted #open_source

Применение Portainer в CI/CD процессах

Продолжаем знакомиться с Portainer и сферами его применения. В этой статье узнаем как написать CI/CD для сборки Docker-образа и деплоя проекта, а также, как получить бесплатно Portainer BE.

https://habr.com/ru/articles/934892/

#Portainer #DevOps #деплой_проекта #cicd #workflow #ghcr #Реестр_образов

TIL; That ghcr.io (Github Package Registry) doesn't even support IPv6. What year is this?

#ipv6 #github #ghcr #til

Apparently asking about GitHub doesn't count as a question about "software tools primarily used by programmers" on #StackOverflow even though I created it there specifically because it's where other #GitHub questions seemed to be.

🙄

So anyone know what happens when you delete the GitHub repository that a #ghcr package repository is attached to? I can't really find good docs on what happens in this case.

https://stackoverflow.com/questions/79317975/what-happens-to-ghcr-packages-if-you-delete-the-repo-that-owns-them

A lot of people seem to be hit by #GitHub's (#GHCR) rate limit when scanning images with #trivy.

As it occurs even when logged in and even when pulling the image itself (i.e. not only for the database), my guess is that it is a global rate limit on the GHCR repo aquasecurity (ghcr.io/aquasecurity)

Here are some pointers:

https://github.com/aquasecurity/trivy/pull/7580

https://github.com/orgs/community/discussions/139074

I have to say that I am totally puzzled by the #GitHub permission model - if the token has read/write access to content, then why it cannot push #container images to #GHCR?

Back in April, we updated our publish scripts to push new images to the GitHub Container Repository #ghcr instead of #Docker — if you use Docker to deploy #NodeBB, switching is pretty straightforward.

We also detail our reasons for switching.

https://community.nodebb.org/topic/17112/now-publishing-images-to-github-container-registry-registry-migration-faq

We just moved all our container images from #DockerHub to #GHCR. Thanks to Docker Hub for supporting us all these years for free, but #FOSS need strong and reliable partners. More details at https://github.com/kiwix/overview/wiki/We're-on-GHCR.io

#hugops to #ghcr. Also, shipping changes around 5pm on a Friday?

Ugh. #GitHub Container registry is down at the moment. Software development comes to a standstill and there was much weeping and gnashing of teeth...

#ghcr